请教一下Contract Tender是如何操作的

今天到多哥洛美的客人发来一封回电，内容如下： contract tender we are a sourcing agent of one of the organisation who wants to buy this your laptop products, from very serious supplier on contract and in bulk quantity, this is not buying and selling business. this is a contract and our client he money to pay cash but want a serious and competent foreign supplier who can take cared responsibility of expenses for this contract tender supply contract laptop products on the stipulated time. if you are capable to handle these project you should reply us immediately for business. 但是我有点搞不明白，这是一个怎样的操作方式？？请各位大神帮忙解答。 我自己理解的是，客人只会下一张合同，然后其他方面全部都是由我们来搞定，只有等到货到他手上了，他才会付现金给我们，不知道我理解的对不对？？